Journal
CHEMICAL ENGINEERING & TECHNOLOGY
Volume 37, Issue 10, Pages 1741-1750Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ceat.201200716
Keywords
Bacillus pumilus; Biosorption; Chromium; FT-IR; Pollution reduction; Scanning electron microscopy
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Funding
- CSIR under the Supra-institutional Project - S&T Revolution in Leather with a Green Touch (STRAIT), CSIR-CLRI communication [1084]
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Chromium is one of the metals used in industry that create environmental toxicity and pollution problems. In the present study, chromium in wastewater was removed by a biosorption method using a bacterial culture of Bacillus pumilus. A mathematical model representing the biosorption kinetics was formulated, supporting the Langmuir isotherm for the adsorption of chromium. Fourier transform infrared and scanning electron microscopy studies were used to characterize the adsorption of chromium by the bacterial biomass. The analysis of pollution parameters (chemical oxygen demand, total organic content, total dissolved solid, total suspended solid) suggest a significant reduction of the pollution load. The results show that the method developed here is very effective for the removal of chromium from an aqueous environment.
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